Dear Mr Coal - see your pm.
Best
tac
BTW - the extremely shallow rifling in the Enfield was designed from the onset to accommodate a bullet with an expanding base, that upsets into this shallow rifling. A solid base bullet would probably not do this, and might have the same accuracy as pitching the bullet under-arm. A load that would upset a solid bullet as big as this would necessarily be VERY hard on the shoulder, and might even be dangerous to shoot with the comparatively thin-walled barrel of the P53-style arm. True, I can shoot cylindro-conoidal bullets out of my hexagonal-rifled Whitworth, and find them, in the backstop, converted by the ka-boom into perfect hexagons, but I'm shooting between 90 and 100gr of FFg in THAT load [safely, I might add, since that is the load stamped on the barrel]. Doing the same with a 600gr .577 solid bullet and an equal amount of charge would be very interesting.
Once.